EP0937935B1 - Rohrverbindung - Google Patents

Rohrverbindung Download PDF

Info

Publication number
EP0937935B1
EP0937935B1 EP99300578A EP99300578A EP0937935B1 EP 0937935 B1 EP0937935 B1 EP 0937935B1 EP 99300578 A EP99300578 A EP 99300578A EP 99300578 A EP99300578 A EP 99300578A EP 0937935 B1 EP0937935 B1 EP 0937935B1
Authority
EP
European Patent Office
Prior art keywords
sleeve member
tubular
coupling assembly
assembly according
tubular coupling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99300578A
Other languages
English (en)
French (fr)
Other versions
EP0937935A1 (de
Inventor
Joseph Nader
Fred Georg Schroeder
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ford Motor Co
Original Assignee
Ford Motor Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ford Motor Co filed Critical Ford Motor Co
Publication of EP0937935A1 publication Critical patent/EP0937935A1/de
Application granted granted Critical
Publication of EP0937935B1 publication Critical patent/EP0937935B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L23/00—Flanged joints
    • F16L23/16—Flanged joints characterised by the sealing means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L23/00—Flanged joints
    • F16L23/02—Flanged joints the flanges being connected by members tensioned axially
    • F16L23/024—Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes
    • F16L23/028—Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes the flanges being held against a shoulder
    • F16L23/0283—Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes the flanges being held against a shoulder the collar being integral with the pipe

Definitions

  • the present invention relates generally to hose fitting assemblies. More particularly, the present invention relates to a tubular coupling designed for use in automotive systems.
  • this assembly includes a male portion and a female portion secured together with some fastening mechanism. Fabrication of the coupling members can be quite complex requiring multiple fabrication steps for each of the male and female members. This complexity increases the cost of the assembly. It would therefore be advantageous to provide a coupling assembly which reduces a complexity and therefore the cost of the coupling assembly.
  • the present invention provides a tubular coupling assembly comprising a pair of identical coupling members configured to be matingly engageable.
  • Each coupling member has a tubular portion, an expanded portion and a transition portion disposed between the tubular and expanded portions.
  • the expanded portion at the end of the tubular portion includes a flange portion circumferentially disposed at one end thereof such that when the expanded portions of two members are in sealing contact with each other a volume is defined therebetween.
  • a stud receiving block member is disposed on the expanded portion of each of the tubular portions and includes an aperture therethrough.
  • the assembly further includes a generally cylindrical, elongate sleeve member disposed within the volume, the sleeve member including a plurality of sealing members circumferentially disposed around an outside surface of the sleeve.
  • the coupling assembly also includes a splined retainer adapted to be press fit into either of the apertures in the stud receiving blocks on the expanded portions of the identical coupling members. The splined retainer extends through the apertures to secure the coupling members together.
  • FIGS. 1-3 show a tubular coupling assembly 10 structured in accord with the present invention.
  • the coupling assembly 10 includes a pair of identical female coupling members 12, 14 which engage each other and are held together by a single splined stud member 16.
  • a sealing sleeve 20 is inserted into a volume 22 defined by each of the coupling members 14, 16.
  • Each of the coupling members 12, 14 is secured to a generally tubular portion 24. This may be done in many ways, such as by mechanically fastening the coupling members to the tubular portions 24. This is done by inserting a tubular member 24 through a coupling member 12 and mechanically expanding the tubular portion to fit tightly against the interior surface of the coupling member 12.
  • the member 12 includes splines disposed on its interior surface, against which the tubular portion is expanded for a better hold. Other fastening means may be utilised as well, such as by brazing.
  • the coupling members can be fabricated with the tubular portions as a unitary member.
  • Each tubular portion 24 includes an expanded portion 26 and a transition portion 28 disposed between the tubular portion 24 and the expanded portion 26.
  • the expanded portion 26 fits through an aperture (not shown) in the coupling member 12 in an interference fit as explained above includes a flange 30 circumferentially disposed at one end thereof for receiving a sealing member into it.
  • Each of the block members 32 includes an aperture 34 extending all the way through for receiving the splined stud member 16 therethrough.
  • Each of these female coupling members 12, 14, is manufactured from an aluminium alloy in a multiple step stamping operation.
  • the coupling members can be fabricated from materials other than aluminium as well.
  • the sealing sleeve 20 is a generally cylindrical, elongated member 40 disposed in the volume 22 formed between the engaged female coupling members 12, 14.
  • the sealing sleeve member 20 includes a plurality of box like grooves 42 circumferentially disposed therearound.
  • a centre box like groove 46 is formed in the sealing sleeve member 20 and receives an axial centre seal 48 disposed in that groove.
  • the axial centre seal 48 extends radially further away from an outer surface of the sleeve member than do the O-rings 44 and sits into the flange portion 30 of each of the female coupling members 12, 14 when the coupling members are secured together.
  • the O-rings 44 engage the interior surface of the expanded portions 26 of the female coupling members when the coupling members are secured together and thus prevent leakage of the fluid from the coupling assembly.
  • the sleeve member can also be fabricated without the axial centre seal 48.
  • Figure 5 shows an alternative embodiment of the sleeve member 20 wherein the general cylindrical member 40 has been coated with an elastomeric coating 50, such as a rubber compound.
  • an elastomeric coating 50 such as a rubber compound.
  • raised projections 52 extending axially away from the outer surface of the sleeve member 20 are formed integrally with the rubber or elastomeric coating 50 surrounding the sleeve member.
  • an axially centre seal 54 is likewise formed, but as before, this is optional. In this manner, fabrication of the sleeve member is somewhat less complex since box like grooves do not need to be formed within the outer surface of the sleeve.
  • the splined stud 16 is press fit into either one of the apertures in the stud receiving blocks 32. It is an advantage that the spline stud 16 can be press fit through either of the identical female members thus increasing the efficiency of the coupling in the event that packaging prevents access to one of the apertures.
  • One end of the spline stud is threaded and receives a threaded nut 17 thereon for insuring that the two female coupling members are secured tightly together.
  • Figure 6 shows an alternative embodiment of the coupling assembly of the present invention further including and orifice tube-type valve 60 disposed within the volume formed by the connection of the two identical female coupling members.
  • the valve 60 is shown in one orientation in Figure 6, but this orientation could be reversed as well.
  • the orifice valve 60 may be disposed within the sealing sleeve member 20 or may simply include a plurality of O-rings with an axial centre seal and serve as a sealing member in addition to being an orifice valve. Obviously, this type of system would be placed on the high pressure side of an air conditioning system employing an orifice valve configuration.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Claims (8)

  1. Rohrkupplung oder Rohrkupplunganordnung, folgendes aufweisend:
    zwei identische Kupplungsglieder (12, 14) mit zueinander passend in Eingriff bringbaren Flanschflächen (30), wobei jedes besagtes Kupplungsglied einen röhrenförmigen Abschnitt (24) aufweist, der über einen hohlen Übergangsabschnitt (28) mit einem hohlen aufgeweiteten Abschnitt (26) in Verbindung steht, wobei besagter aufgeweiteter Abschnitt (26) an besagter in Anlage bringbarer Flanschfläche (30) endet und von einer ringförmigen Aussparung (46) umgeben ist, die in besagte in Anlage bringbare Flanschfläche (30) eingeformt ist, so daß, wenn besagte in Eingriff bringbare Flächen (30) in Kontakt miteinander stehen, von den besagten aufgeweiteten Abschnitten ein Raum gebildet wird, der einen größeren Durchmesser als ein Durchmesser der besagten röhrenförmigen Abschnitte (24) aufweist;
    ein allgemein zylindrisches längliches Hülsenteil (20), das in besagtem Raum angeordnet ist, wobei besagtes Hülsenteil (20) eine Außenfläche mit mehreren in Umfangsrichtung verlaufenden Dichtungselementen (44) aufweist, die radial von dieser abstehen und in Dichtungseingriff mit den Innenflächen der besagten aufgeweiteten Abschnitte (26) stehen, wobei besagtes Hülsenteil (20) eine mittige Umfangsdichtung (48) aufweist, die sich radial in Dichtungseingriff mit besagter ringförmiger Aussparung (46) erstreckt, wobei besagte mittige Dichtung (48) einen radialen Durchmesser hat, der größer als ein radialer Durchmesser jedes der besagten Dichtungselemente (44) ist; und
    einen Bolzen (16), wobei jedes der besagten Kupplungsteile ein den Bolzen aufnehmendes Blockteil (32) aufweist, das radial von besagtem aufgeweitetem Abschnitt absteht und eine durch dieses gehende Öffnung aufweist, wobei besagter Bolzen (16) mehrere Riffelungen (16) aufweist und durch Preßsitz in einer der besagten Öffnungen in den besagten den Bolzen aufnehmenden Blöcken (32) befestigt ist und durch die andere der besagten Öffnungen in besagten den Bolzen aufnehmenden Blöcken (32) reicht, so daß besagte Kupplungsteile (12, 14) mit besagten in Eingriff bringbaren Flächen (30) in Anlage aneinander befestigt werden.
  2. Rohrkupplung nach Anspruch 1, worin besagtes Hülsenteil aus einem Metallwerkstoff hergestellt ist und mehrere Nuten aufweist, die in Umfangsrichtung um dieses herum angeordnet sind und darin besagte Dichtelemente aufnehmen.
  3. Rohrkupplung nach Anspruch 2, worin besagte Dichtelemente O-Ring-Dichtungen sind.
  4. Rohrkupplung nach Anspruch 1, worin besagtes Hülsenteil zwei besagte Dichtelemente zu beiden Seiten der besagten mittigen Dichtung aufweist.
  5. Rohrkupplung nach Anspruch 1, worin besagtes Hülsenteil einen starren, allgemein länglichen zylinderförmigen Teil mit einer Außenfläche und einem Elastomerüberzug aufweist, mit der besagten Außenfläche verbunden ist und besagte Außenfläche des besagten Hülsenteiles bildet.
  6. Rohrkupplung nach Anspruch 5, worin besagte mittige Dichtung und besagte Dichtelemente von mehreren radial verlaufenden Umfangsvorsprüngen der besagten Elastomerbeschichtung gebildet werden.
  7. Rohrkupplung nach Anspruch 1, mit einem Mündungsventil, das in besagtem Hülsenteil angeordnet ist.
  8. Rohrkupplung nach Anspruch 1, worin besagtes Hülsenteil ein Mündungsventil enthält.
EP99300578A 1998-02-23 1999-01-26 Rohrverbindung Expired - Lifetime EP0937935B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US27938 1998-02-23
US09/027,938 US6106030A (en) 1998-02-23 1998-02-23 Tubular coupling

Publications (2)

Publication Number Publication Date
EP0937935A1 EP0937935A1 (de) 1999-08-25
EP0937935B1 true EP0937935B1 (de) 2003-07-09

Family

ID=21840631

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99300578A Expired - Lifetime EP0937935B1 (de) 1998-02-23 1999-01-26 Rohrverbindung

Country Status (4)

Country Link
US (1) US6106030A (de)
EP (1) EP0937935B1 (de)
KR (1) KR19990083642A (de)
DE (1) DE69909348T2 (de)

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Also Published As

Publication number Publication date
US6106030A (en) 2000-08-22
DE69909348D1 (de) 2003-08-14
KR19990083642A (ko) 1999-11-25
DE69909348T2 (de) 2004-05-27
EP0937935A1 (de) 1999-08-25

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